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Page AR-15 » Rimfire and Pistol Calibers
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Archived [ARCHIVED THREAD] - Hahn block/Colt style build help
Posted: 4/23/2015 1:11:51 PM EDT
Hi Guys

I have a Colt 6450 and am looking to build another 9mm with a Colt upper I have.

I have a Hahn dedicated block I want to use.

Will a colt new production 9mm bolt group work and if so do I need to use a 9mm hammer(I do have a 9mm RRA hammer)

What buffer? If colt what Gen, can I use the latest one?

Do I need a different hammer spring or recoil spring?

I would like to use Colt parts if possible as my upper is colt and I already have Colt Spare parts but will use RRA or CMMG if the parts are interchangeable.

Thanks guys

Archived [ARCHIVED THREAD] - Hahn block/Colt style build help
Page AR-15 » Rimfire and Pistol Calibers
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